Nut-lock



No. 608,777. Patentd Aug. 9, I898. w. A. JACKSON.

NUT LOCK.

(Application filed Apr. 23, 1898.) (No Model.)

WITNESSES NVENTOI? A TTOHNE YJ' llnrrn Srarns arnr prion,

IVILLIAM A. JACKSON, OF ELIZABETH, NEIV JERSEY.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 608,777, dated August 9, 1898. Application filed April 23, 1898. Serial No. 678,624. (No model.)

To all whom, it may concern.-

Be it known that I, IVILLIAM A. JACKsON, a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Nut-Locks, of which the following is a full and complete specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to nut-locks; and the object thereof is to provide an improved device of this class which is simple in construction and effective in operation and which maybe used on the ends of bolts, spindles, rods, or bars wherever nut-locks are requircd.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which the separate parts of my improvement are designated by the same numerals of reference in both views, and in which--- Figure 1 is a sectional side view of a bolt provided with my improved nu't-loek,and Fig. 2 a plan view thereof.

In the drawings I have shown at 5 an ordinary bolt provided with a head 6 and one end of which is screw-threaded, as shown at 7, and provided with a nut 8 of the usual or any preferred form. The screw-threaded portion of the bolt 5 is provided, near the end thereof, with a longitudinal central slot 9, both ends of which are closed, and passing through the end of the bolt into said slot is a screw-threaded plug 10.

I also provide two semicircular disks or plates 11 and 12, which are mounted in the slot 9, adjacent to the inner end thereof, and pivotally connected centrally thereof, 'as shown at 13, in the mannerof a pair of shears, and each of these semicircular disks or plates is provided with a projecting jaw 14, and said projecting jaws are thicker than the disks or plates with which they are connected or in connection with which they are formed,whereby shoulders or projections 15 are formed, which prevent said jaws from folding together or in horizontal line, but which permit of their being folded sufficientl y closely to allow the nut 8 to be screwed onto the bolt. The semicircular disks or plates 11 constitute the heads of the jaws 14 and are free to turn 011 their pivotal support 13 within certain limits, and the operation of the device will be readily understood from the foregoing description when taken in connection with the accompanying drawings and the following statement thereof.

IVhen it isdesired to screw the nut onto the bolt, thcplug 10, which operates as a wedge,is turned to the left and partially withdrawn from the end of the bolt, and in this position of said plug the jaws 14 may be pressed together until the outer ends thereof will be within or concealed by the side walls of the slot 9, and when said jaws are in this position the nut 8 may be screwed onto the bolt, as will be readily understood. After the nut 8 has been screwed into position, the plug 10 is also screwed into position, as shown in Fig. 1, and the inner end thereof passes between the jaws 14 and forces them outward into the position shown in said figure, and the removal of the nut when the said jaws are in this position will be impossible.

This device is simple in construction and operation and perfectly adapted to accomplish the result for which it is intended, and it will be apparent that changes in and modifications of the construction described may be made without departing from the spirit of my invention or sacrificing its advantages.

Having fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In a nut-lock, a bolt or similar article provided with a screw-threaded end in which is formed a central longitudinal slot, a screwthreaded plug which is passed through the end of the bolt into said slot, and two jaws pivotally mounted in said slot and the ends of which project outwardly, substantially as shown and described.

2. The combination with a screw-threaded bolt provided with a longitudinal slot in the screw-threaded end thereof,the outer end of which is closed, and a screw-threaded plug which is passed through said closed end into my invention I have signed my name, in pressaidslot, of two pivotally-connectedjaws pivenoe of the subscribing Witnesses, this 22d 'otally mounted in said slot and the ends of day of April, 1898.

which project outwardly, and a nut which is "WILLIAM A. JACKSON. adapted to be screwed onto said bolt, snb- WVitnesses: stantially as shown and described. M. A. KNOWLES,

In testimony that I claim the foregoing as V. M. VOSLER. 

